1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafd79f12bc8f713a31281df410422c1c0f7219c4fa42530e065adb289ff6bd2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/959c5a01-e7f7-47fa-b79c-bd81fab0d328.json and https://artists.proofprofile.net/proofs/artist/959c5a01-e7f7-47fa-b79c-bd81fab0d328.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ab21737374289ae96ad4615d29a8e1958c10f56cc5db0d855b9c0228730d0a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81714982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae59cb3516cd6b2a67fc8371c2bdf80382945af97db23aea596933fd4d30857. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81714985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005239d162d5559b867655aa073a6479e8bf9f9c89a7e290b3fdd5a04feacb2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81714989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7611579d166f50b5cafff21d2b85bc27bf4975b332b2d2cd7c8c986cad1010. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS721600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236ea0f9f9f1c21412ff6b8221514fdf484ecc2b2e9cdfd349e02fb70a7014d5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS721600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec496b0e9a1ba61b27e68a43780d0fcd6511417dd70378961e798c3bd769ad3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:34:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1813982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e0b02eccd5562e9ff4af09ad11f5f98e409f50620426af8d0f506415d980d0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1813985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943cbcba794ac4863d4922c05469f7ced9d73418e9d9b4bd23d2df4034d661b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1813994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75edeac0df4fea1fe71b1fb81604a06aab274c193b3a35c196947b9897c4933. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1813823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbee5b208bf629ec846d06ae74ac9ae7abd439e9dc6a9452127b67da882e1aa8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1813826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e388a70c53ce5482755d64b512a5c05fc63140756980680beeb569af25526f5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1813828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c1e986b285744e9cdf4e3e57dc38f3fc330a403a5412e08f7245de5addb74d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1813831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a5f7ee8d43bc4c06d4107c2de270c9262b827e846c280dfc3679b2354efb2. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1814366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a0294f444b95819045e2a24e5c3e5a16e46ccbfbecd64dd985ecfbfb55be2e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1814367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a67461442d9a1eb611b74a03f34843319a957f3e58abae0d02f91b6accada70. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1823908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd667476ab2f4e3199a8ade5e0aea9d866521033f7f0dd0f7d96b2e1b318863ac. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1823891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642fec9e6ebb9ff58d74bfd034f451eaed386a9afe3a18963a1d9b2422b8e670. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1823882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415cf55ec4946f4f8c640a15e96d01605e18ab6c15ff59fb20ad2266e001b346. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1823885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd667476ab2f4e3199a8ade5e0aea9d866521033f7f0dd0f7d96b2e1b318863ac. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1823891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf377ddc1c51d5c81bae8464ed0c6591732e210290eb1eed4dc9d256e6a40cca0. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1826058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40969e6ce3e807da1f10013b7463497a3a74fed7e83b1e79f376bd734c14a9af. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1826060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce4967f8cf4a9a1b9c2a65d9a7065f5008f0557ba23f195a12c7836bf1041dd. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1826057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f27d03d729bc6d4bd70380e2172d58291bc0dbf855c1d882716165ab4889d02. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1837176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fb315781d2c7edf7641d2dbfc73b0d4eeff96826e1bfee06458582566dac6c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1840367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10a33a2366ed818baf3515f9175099eb946f3a34343509c2e6dd5a2209c15b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1910508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367c49ad983003d76c1c0d4e08d7f2b647f63eecdedf5202bd09d0ee34cb07bc. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC1990097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69114c5c343193619a9b8d5a89b048a1ecccfe586e56afc427d9108a6d2ac9f3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12303043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e88dccdf4bee2f25ca97f7e18de28072eabc2aff4380b05057f2149b682ca4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12400502.